/Engine/Source/Editor/Sequencer/Public/SequencerTrackFilterExtension.h
Override this method to add new track filters.
virtual void AddTrackFilterExtensions ( [TArray](API\Runtime\Core\Containers\TArray)< [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< class [FSequencerTrackFilter](API\Editor\Sequencer\FSequencerTrackFilter) > > & InOutFilterList ) const